{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["protein", "cell line", "cell type", "DNA", "RNA"], "input": "These results suggest a microenvironment-directed, two-step model for GATA-1 expression in differentiating hematopoietic progenitors that involves (i) cycle-dependent initiation and (ii) lineage-dependent maintenance or suppression ."}
{"protein": ["GATA-1"], "cell line": [], "cell type": ["differentiating hematopoietic progenitors"], "DNA": [], "RNA": []}